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15.7.1
UPPER BURNER WIRING DIAGRAM (PCB A, LEFT)
WIRING COLORS
K0=white
K1=yellow
K2=brown
K3=green
K4=grey
K5=orange
CN3
CN1
1
2
3
4
5
6
1
17
18
19
20
LOCK-OUT
A
B
CASCADE
N.O.
CONNECTION
to
to
master
slave
boiler
boiler
only when unit is
cascaded
15.7.2
UPPER BURNER CONTROL
separate ionisation
CN8
input. (always active)
K6=blue
K7=red
K8=black
K9=purple
K10=yellow/green
CN5
2
3
4
5
6
7
1
2
3
21
22
23
24
BURNER
HEAT
BURNING
DEMAND
N.O.
N.O.
T2
ignition
transformer incl.
ionisation input.
F2
F1
CN not used
4
5
6
7
8
9 10
K2
K6
34 35
36
37
L
N
L1
DO NOT USE
K10
CN4
boiler casing
CN10
FAN
38
39
40
41
42
N
L2
L
INTERNAL
DO NOT USE
MAIN POWER
CONNECTOR
POWER
SUPPLY
cascade
connection
230Vac mains
(internal)
pump relay
43
N
connection
examples
47
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